package cn.tedu.sp06.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.web.util.JsonResult;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@Slf4j
public class RibbonController {

    @Autowired
    private RestTemplate rt;

    @GetMapping("/item-service/{orderId}")
    @HystrixCommand(fallbackMethod = "getItemsFB")//降级方法名
    public JsonResult<List<Item>> getItems(@PathVariable String orderId){
        //调用远程的商品服务，获得订单的商品列表
        //{1} --- RestTemplate自己定义的一种占位符格式
        return rt.getForObject("http://item-service/{1}",//从注册中心获取注册表
                            JsonResult.class,
                            orderId);//用orderId填充占位符{1}
    }

    @PostMapping("item-service/decreaseNumber")
    @HystrixCommand(fallbackMethod = "decreaseNumberFB")//降级方法名
    public JsonResult decreaseNumber(@RequestBody List<Item> items){
        return rt.postForObject("http://item-service/decreaseNumber",
                                items,
                                JsonResult.class);
    }

    @GetMapping("/user-service/{userId}")
    @HystrixCommand(fallbackMethod = "getUserFB")//降级方法名
    public JsonResult<User> getUser(@PathVariable Integer userId){
        return rt.getForObject("http://user-service/{1}", JsonResult.class,userId);
    }
    @GetMapping("/user-service/{userId}/score")
    @HystrixCommand(fallbackMethod = "addScoreFB")//降级方法名
    public JsonResult addScore(@PathVariable Integer userId,@RequestParam Integer score){
        return rt.getForObject("http://user-service/{1}/score?score={2}", JsonResult.class,userId,score);
    }
    @GetMapping("/order-service/{orderId}")
    @HystrixCommand(fallbackMethod = "getOrderFB")//降级方法名
    public JsonResult<Order> getOrder(@PathVariable String orderId){
        return rt.getForObject("http://order-service/{1}", JsonResult.class,orderId);
    }
    @GetMapping("/order-service/")
    @HystrixCommand(fallbackMethod = "addOrderFB")//降级方法名
    public JsonResult addOrder(){
        return rt.getForObject("http://order-service/", JsonResult.class);
    }

    //=============================================================================


    public JsonResult<List<Item>> getItemsFB(String orderId){
        return JsonResult.err().msg("获取订单的商品列表失败");
    }


    public JsonResult decreaseNumberFB(List<Item> items){
        return JsonResult.err().msg("减少商品库存失败");
    }


    public JsonResult<User> getUserFB( Integer userId){
        return JsonResult.err().msg("获取用户失败");
    }

    public JsonResult addScoreFB(Integer userId,Integer score) {
        return JsonResult.err().msg("增加用户积分失败");
    }

    public JsonResult<Order> getOrderFB(String orderId){
        return JsonResult.err().msg("获取订单失败");
    }

    public JsonResult addOrderFB(){
        return JsonResult.err().msg("添加订单失败");
    }

}
